Locking mechanism



w.1. HOSCEIT LOCKING MECHANISM FOR DOORS.

APPLICATION FILED OCT- 25, I917 Patented July 29, 1919.

2 SHEETS-SHEET I.

THE COLUMBIA PuNouRm-H 410-, WASHINGTON, D. c.

vw. JQHOSCEII. LOCKING MECHANISM FOR D OORS.

APPLICATION FILED OCT. 25, 1917 1,3 1 1,562. Patented July'29, 1919.

2 sHE/ZTs-sHEET 2. &

THE COLUMBIA PLANQGRAPH co., WASHINGTON. D. c.

i the WILLIAM :rosnrn HOSCEIT, or CHICAGO, ILLINOIS.

LOCKING MECHANISM FOR noons.

Specification of Letters Patent.

Patented July 29, 1919.

Application filed October 25, 1917. Serial No. 198,442.

To all whom it may concern:

Be it known that 1, WILLIAM J OSEPH Hoscnrr, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Looking 'Mechanism for Doors, of Which the following is a specification.

This invention relates to locking mechanism for railway car doors.

One of the Objects of the invention is to make it necessary first to open a given door before it is possible to open a second given door.

Another object of the invention is to make it necessary first to close a given door before it is possible to close a second given door.

Another object is to provide an interlock between a plurality of doors whereby the same may be controlled in a manner to meet the various requirements for successful commercial use.

-Generally speaking, these and other objects are accomplished by providing in a railway car, the combination of a plurality of movably mounted doors, a member operatively connected with one of said doors, and a latch, the movement of Which is controlled by another of said doors for normally holding said member and its associated door in a given position.

The invention is illustrated on the accompanying sheets of drawings, in which Figure 1 is a fragmentary sectional view taken in the plane of line 11 of Fig. 2, showing the floor in plan and embodying my invention;

Fig. 2 is a fragmentary side elevation of a freight car embodying my invention;

Fig. 3 is a fragmentary transverse sectional view taken in theplane of line 33 of Fig. 2 and showing the drop doors locked in their raised or closed position;

Fig. 4 is a similar sectional view showing the drop doors in their loweredor opened position;

Fig. 5 is an enlarged detail plan View showing the latch for holding the drop doors closed, the movement of which latch is controlled by a side door; and,

Fig. 6 is a detail sectional view taken in p lane of line 6 -6 of Fig. 5.

various novel features 013 the invem tion will be apparent from the follcwingda scription and drawings and will be particularly pointed out in the appended claims.

This invention is a modification of that disclosed and claimed in a copending application, Serial No. 198,441, filedOctober 25-, 1917. The; car 10 is provided with a center sill 11, intermediate sill 12 and side sill 13, which support various portions of the floor 14. In view of the of the car are symmetrical, only one side will be particularly shown and described. Drop doors 15 whichform a portion of the floor of the car are preferably pivotally confact that diiferent sides nected to the intermediate sills 12, and are arranged to swing downwardly and inwardly toward the center of the car. Each of the drop-doors 15 includes an angle bar 16, the outer end of which tapers'and is provided with serrations 17 which cooperate with serrated portions 18 ofan operating shaft 19 which normally is located under the door for supporting the same in its raised or closed position, as particularly shown in Fig. 3. Wrapped around the operating shaft 19 at each end thereof is. a chain. 20, one end of which is secured to the shaft and the other end of which is secured to a bracket member 21 secured to and depending from the angle member 16 of the associated drop doors.

It is readily apparent that-if the operating shaft in each case is actuated to move outwardly away from the center of'the car, that it will pass from under the associated drop door, permitting the latter to swing downwardly into an open position in which it is supported by suitable means 22. The shaft 19 may be actuated in any suitable manner. In this particular case there are four of these shafts 19, one located infeach one-quarter, of the car, two being at each side and in alinement with each other longitudinally with respect to each other and to the car. It will be notedthat each of the shafts 19 is supported at a plurality of points by supporting members 23 which are secured to the side sill 18 intermediate the floor 14 and transverse beams 24. Each of these supporting members 23 is provided with an elongated slot 25 in which the shaft 19 may move transversely, the outer end of each of the slots 25 having a depressed portion 26 in which the shaft 19 inayrest when the shaft is, armed to its extreme outward adapted to slide transversely with respect to the car a nd be guided in suchmovement by flange members '28. Normally, however,

these slidably mounted me1 nbers -27 are re- I tamed in their innermost position to positivelyh'ol'd the operating shaft- 19 in-a posi tion'to hold the doors 15in their upper or closed position'ysaid slidable members 27 normally being'held in such position by a latch29 which is pivotally mounted on a pin 30 connected te'the Side Sui-13. 5 It Win be notedthat latch 29 isflocated 'sirbstantially midway between the ends of the car and "is arrangedto retain the "slidably I mounted members 27' of the two adjacent wise direction, as

operating shafts 1'9,"so that'when' one of the shafts 19 is liberatedthe other sha'ftia lso is liberated. From this arrangement it is apparent that if the latch 29' is rotated in a counterclockviewed in Figs; "2 and 5, through an angle of 90,-'that said latch will have moved, beyond the path of movement of the'slidably mounted holding mems bers 27 wherebythe latter and also the shafts 19. are free to move outwardly,thererection u by permitting drop doors 15 tofallinto their lower or opened position; But in "this connection it is to be observed that the latch 2 is not'free aroma from its normal horizontal'ly arranged -pos'ition unless the side door 3st of the car is moved 'to an open position be ond the'la t 'ch 29, for the re son that the latch is'located directly under the lower edge of thevside door 31. It is seen, there fore, that it is "necessaryto open the side door first before the drop doors can be o ened. I I

I In connection with thecomp'lete' operation of the door lock mechanism, let it be assumedthat'thesealof the side door has been broken and the door moved into an open position beyond the latch 29. -The latch 29 is "then swung 90 in'a co uiterclockwise dintil its "lower side-passes into engagement with "a stop member 31. The shaft 19, 'ineach case, is then operated by any suitable mechanism to move the shaft in an outward direction, whereuponit passes Iffrom under the drop doors 15, permitting the drep doors to pressed portions 2610f theslots 25 with the chains 20 completely unwound orsufficiently so to permit I the drop'doojrs'letofrest upon the" supports 22. During the outw'ard movemanner the shaft 19, the slidably mounted members 27 move outwardly, beyond the verwithout first closing members 27 is.

forms a positive'interlock between the side door and the drop doors in the floor of the car. In order to close th'e'door's, therefore, it is first necessary to actuate the shaft '19 in a manner to wind the chain 20 the'areon, whereupon the drop doors 15 will swing upwardly into their I 1-9 finally 'moving under the doors 1'5 and drawing "the sli'dably mounted=members 2-7 inwardly to a point where' the latch 29 may be--'swung 90 in a clockwise direction to positively lock the shafts 19 intheir ingpositions and permitting the side door to be moved into a' closed position; By means of this arrangement it is apparent that a single seal secured to the side door is sufficient fo'r'both the side and drop doo'rs.

/ The latch member 29 hasassoc'iate'd therewith'at opposite ends bracket members 32 and 33 having inwardly extending lips behind which the outerpo'r'tions ofthe latch pass and preferably the lip on thebracket 32 or a portion of the latch 29 associated therewith, has a cam surface to make a "relatively tight frictional holding connection between the latch '29 and "one of its 'coe'perating brackets to hold the mal'locking'position; I I I It is apparent that there may bevarious modifications of the invention herein fpartic'ularly'shown and described, and fit is my intention to cover all which do not depart from the spirit and scope of the invention as set forth in "the following claims.

Iclaimzf 3 1. In a railway'ca'r, the combinationo'f a plurality of movably mounted doors, and locking means whereby it is necessary first to 'ope'na given doorbefore it is possible to open a second given door, said locking means including shaft carrying members and a latch normally for. holding said members in a given position.

2. In a railway car, the combination. ofa plurality of movably mounted doors, looking means whereby it is necessary first to open a given door before it is possible to open a second given door, said locking means including shaft carrying members and ala'tc'hnormally for holding said members in a given positiomand' means-normally for retaining said latchin it'si locking position. I I I I a a l ca e o bin on et plurality of movably mounted 'ddors', "and holdlatch in its 'nora such modifications locking means whereby one must be closed before the other can be closed, said locking means including shaft carrying members and a latch normally for holding said members in a given position.

4. In a railway car, the combination of a plurality of movably mounted doors, and locking means whereby it is necessary first to actuate a given door before it is possible to actuate a second given door, said looking means including shaft carrying members and a latch normally for holding said members in a given position.

5. In a railway car, a plurality of movably mounted doors, locking means for said doors including a member for normally holding one of said doors in a closed position, a slidably mounted member connected to said first mentioned member, and a pivotally mounted latch for normally directly holding said slidably mounted member in a locking position.

6. In a railway car, a plurality of movably mounted doors, locking means for said doors including a member for normally holding one of said doors in a closed position, a slidably mounted member connected to said first mentioned member, and a latch for normally engaging and holding said slidably mounted member in a locking position, said latch normally being held in its locking position by another one of said doors.

7. In a railway car, a door movably mounted in the floor of the car, a shaft normally located under said door for holding the latter in its closed position, a supporting member for said shaft ermitting lateral movement of the shaft whereupon the door may be opened, a shaft carrying member and a latch normally engaging said shaft carrying member and causing said shaft to remain in a position for holding said door.

8. In a railway car, the combination of a door movably mounted in the floor of the car, a shaft normally located under said door for holding the latter in its closed pcthe combination of five cents each, by

sition, a supporting member for said shaft permitting lateral movement of the shaft whereupon the door may be opened, a shaft carrying member, a latch normally engaging said shaft carrying member and causing said shaft to remain in a position for holding said door in closed position, and a side door for holding said latch in a locking position.

9. In a railway car, the combination of a side door, a door movably mounted in the floor of the car, a shaft normally located under the door for holding the latter in a closed position, a support for said shaft having an elongated opening to permit movement of said shaft to permit opening of said door, a movably mounted member in which said shaft is mounted, and a latch associated with said side door for cooperating with said movably mounted member normally to retain said shaft in its holding position.

10. In a railway car, the combination of a plurality of movably mounted doors normally sustained by shafts, and locking mechanism between said doors including a pivotally mounted latch directly controlling releasing movement of said shafts, the releasing movement of the latch being controlled by one of said doors.

11. In a railway car, the combination of a plurality of movably mounted doors normally sustained by shafts, locking mechanism between said doors including a pivotally mounted latch directly controlling releasing movement of said shafts, the releasing movement of said latch being controlled by one of said doors, and means for limiting movement of said latch.

12. In a railway car, a plurality of door retaining shafts, and a single latch the ends of which are operatively associated with said shafts for looking all of said shafts in a given position.

Signed at city of Chicago, State of Illingisi this 25th day of September, A. D 1 1 WILLIAM JOSEPH HOSCEIT.

addressing the Commissioner of Patents,

Washington, D. 0. 

